Chloroplatinic acid catalyzed cyclization of silanes bearing pendant acetylenic groups

Article abstract of DOI:10.1016/0022-328X(89)85001-6

Chloroplatinic acid catalyzed, intramolecular hydrosilylation of acetylenes of structure HMe2SinSiMe2CCR (R = H or Ph, n = 2 or 3) proceeds via syn addition of the Si-H group to the carbon triple bond to give, predominantly, cyclic products having an